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Multilocular thymic cysts can be easily misdiagnosed as malignant tumor on computer tomography: A case report
Jun Sun1, Qing-Ning Yang1, Yi Guo1
1Department of Radiology, Chongqing University Central Hospital, Chongqing Emergency Medical Center, Chongqing 400014, China.
Background:
Multilocular thymic cyst (MTC) is a rare mediastinal lesion which is considered to occur in the process of acquired inflammation. It is usually characterized by well-defined cystic density and is filled with transparent liquid.
Case Summary:
We report on a 39-year-old male with a cystic-solid mass in the anterior mediastinum. Computer tomography (CT) imaging showed that the mass was irregular with unclear boundaries. After injection of contrast agent, there was a slight enhancement of stripes and nodules. According to CT findings, it was diagnosed as thymic cancer.
Conclusion:
After surgery, MTC accompanied by bleeding and infection was confirmed by pathological examination. The main lesson of this case was that malignant thymic tumor and MTC of the anterior mediastinum sometimes exhibit similar CT findings. Caution is necessary in clinical work to avoid misdiagnosis.
